Improvement in wax-thread sewing-machines



2 Sheets--Sheet 1.

E. E. BEAN. Wax-Thread Sewing-Machines.

Ptented June 18, 1872.

jizyazzr X l 1 w @M- www. nj Non@ 2 Shets--Sheet 2.

E. E. BEAN.

Wax-Thread Sewing-Machines.

N0. 128,008. PatentedJune18,1872.

`U'NrTnn STATESl PATENT OFFICE. 1

EDWIN E. BEAN, rOF BOSTON, MASS., ASSIGNOR TO THE CONSOLIDATEDWAX-THREAD SEWING-MACHINE COMPANY, OF SAME PLACE.

IMPROVEMENT IN WAX-THREAD SEWING-MACHINES.

Specification forming part of Letters Patent No. 128,008, dated June 18,1872.

I, EDWIN E. BEAN, of Boston, in the county of Suffolk and State ofMassachusetts, have invented certain new and useful Improvements onWax-Thread Sewin g-Machines, of which the following is a specification:

N rature and Objects ofthe Intention.

The nature of my invention relates to improvements on wax-threadsewing-machines, consisting in the employment of a series of pipes,through which hot water is made to circulate for the purpose of keepingthe hard wax used on such machines in a liquid state. The water isheated by means of a lamp pliced under a coiled pipe, and the water iskept in continuous circulation by means of a pump operated from any ofthe moving parts of the machine. The water is conducted through pipes inthe boxcontaining the wax, by which ar# rangement the wax is kept in aliquid state, so as to adhere easily to the thread that is conductedthrough the wax. The pipes containing the heated water are alsoconducted to the tension-roller and to the post close under the table,so as to keep the wax-thread soft and pliable during the whole operationof the sewing-machine, as will now be shown and described.

On the drawing, Figure 1 is a front elevation of a sewing-machine withmy improvements attached thereto. Fig. 2 is a plan of the same. Fig. 3is a rear View of said machine. Fig. 4t is an enlarged centrallongitudinal section of the pump; and Fig. 5 is an enlarged side view ofthe tension arrangement.

Similarletters refer to similar parts wherever they occur on thedrawing.

.a is the frame of a wax-thrcad machine. b is the post, and c the table.A box, d, containing the wax, is secured to the frame a in a suitableway, as shown in Figs. l and 2. A coiled pipe, e, is placed in the lowerpart of the box d, through which the heated water is made to pass fromthe heater f. The heater f is placed on the rear of the frame c, or inany suitable place, according to the construction and shapeA of thesewin g-machine, and consists in a coiled pipe surrounded by a chimney,g, shown in dotted lines on Fig. 3. A suitable lamp, h, is placed underthe coiled pipe f in such a manner that theburner of the said lampprojects inthe lower part of the coil f. A candle or a gas-burner may beused to equal advantage instead of the lamp h, where circumstances soadmit. The upper part of the heater f is connected to a pipe, i, towhich a funnel, k, is attached, for the purpose of llingthepipes withwater as it evaporates. The pipe t' projects through the frame a andconnects with the coiled pipe ein the box d. After the pipe e leaves thebox d it is carried around the shaft for the tension-roller l, as shownin Fig. l, for the purpose of keeping the wax-thread pliable and softwhen passing over or around the said tension-roller l. After the pipeshave been carried around the shaft for the tension-roller l it iscarried back toward the rear of the machine, where it is bent downward,in a manner as shown at m m on Fig. 3, and conducted to the upper partof the post n, where the pipe surrounds the said post for the purpose ofkeeping the wax-thread soft and pliable, during the sewing of the same,in the material operated upon. After the pipe m has passed around thepost a it is carried back as the pipe o to the pump p, shown on Fig. 3.From the pump p the water is pressed through the pipe q in the coiledheater f, from which it is again conducted to the respective parts ofthe machine in a manner as shown and for the purpose herein described.The pump p is shown in an enlarged section in Fig. 4, on which o is thesupply-pipe, leading in the valve-chamber i', covered by the valve s, asshown. t is a chamber covered by an elastic diaphragm, u, that is heldclosely to the iiange of the chamber t by means of the ring e and screwsw. In the center of the diaphragm u is an eyef, attached, to which theconnecting-rodyis hinged, as shown in Fig. 3. The link y is attached inits other end to any suitable moving part, Z, or its equivalent on themachine, where the proper throw can be obtained for the link y. Aspaee,1, leads fromthe chamber t and is covcred by the valve 2, as shownin Fig. 4, and the pipe q connects with the upper part ofthe pipe 1.

The operation of the pump p is as follows: As the diaphragm u is raisedupward in the center it creates a vacuum in the chamber t,'when thevalve sis opened automatically, thus allowing the liquid from the pipe oto enter the chamber t freely; and when the diaphragm u is pressed downit forces the liquid up through the pipe.

2 leemos 1 and valve 2 in the pipe q leading in the heater` f. In thismanner the Water is continually entering the pump 19 from the pipe o andpressed upward, through the pipe q, to the heaterf. It is not necessaryto use this kind of a pump, as other kinds of pumps may be constructedto Work my invention to equal advantage.

My arrangement for regulating the proper tension ofthe thread used isshown in enlarged detail on Fig. 5. 0n that figure, 3 is thetension-roller, movable around the axis 4, that is A rigidly secured tothe knee-lever 5, that is made to swing slightly on the screw or pin 6attached to the frame of the sewing-machine. The upper end 7 of theknee-lever 5 is connected by means of a spiral spring, S, to anadjustable sct-scre\v, g, adjustable in the slotted bearings 10 10,shown on Fig. 5. A stationary piece, 11, is attached to the frame of thesewing-machine, and the surface of the roller 3 is thus pressed againstthe piece 11 by the action of the spiral spring S on the knee-lever 5 7.By simply mov ing the setscreur 9 in or out in the slotted bearings 1010the tension on the roller 3 may be decreased or increased, as may berequired.

The Wax-thread 12 enters the box d through a small hole, 13, shown onFig. l, from which it is carried, under the guide 14, through the meltedWax, to the Wipers 15 15, shown on Figs. 1 and 2. From the wipers 15 15the Wax-thread is conducted to the tension-roller 3 in the usual Way,and from the tension-roller to the threadcarrier, as usual.

Having thus fully described the nature, construction, and operation ofmyinvention, I wish to secure by Letters Patent and claim- A pump andconnected pipe combined, substantially as described, With the frame of asewingmachine, for the purpose of circulating Water through such pipesto the different parts of the machine, as and for the purpose set forth.

EDWIN E. BEAN.

Witnesses:

ALBAN ANDRN, WM. N. HUTcnrNsoN.

